Packaging blank



FIG. 1 is a plan view of a packaging blank, showing our new design, the opposite side being the same in appearance;

FIG. 2 is an edge view looking from the right of FIG. 1;

FIG. 3 is an edge view looking from the bottom of FIG. 1;

FIG. 4 is a plan view showing a modified form of our new design, the opposite side being the same in appearance;

FIG. 5 is an edge view looking from the right of FIG. 4; and

FIG. 6 is an edge view looking from the bottom of FIG. 4. 

The ornamental design for a packaging blank, as shown and described. 